Not all trains and route segments on the Golden Pass route have panoramic coaches.

You can work these out from the SBB website...go to timetable, search the journey and expand each option. You will need to spell Luzern with a z. After expanding the journey option, look for the trtiangular panoramic coach symbol in the information column.

I think you may need to search separately from Luzern to Interlaken Ost and Interlaken Ost to Montreux VIA ZWEISSIMEN to find the information you need or you will not be routed via the Golden Pass route

And regarding prices, when you use the link under 'more on other websites' - http://www.jungfrau.ch/en/tourism/travel-information/tickets-rates/wengen/fares-for-individual-travellers/ - you have to click on the departure point from the list on the left before reading off the fare which is then shown alongside the destination from the list in the main table. Just saying, because I couldn't understand this at first - in case it helps - but maybe I am just thick!! Happy travelling!

Thanks So much , will probaly just go on the Golden Train from Interlaken to Lucerne as we will be in Grindelward, would have already been on the BE and GE by this point so im sure we wont be disappointed , Thanks Again MIKE and Arno :)